John Rosen­gren is the award-win­ning author of eight books, includ­ing Hank Green­berg: The Hero of Heroes and Blades of Glo­ry. His arti­cles have appeared in Sports Illus­trat­ed, Read­er’s Digest, Ten­nis, Run­ner’s World, and the Utne Read­er, among oth­er pub­li­ca­tions. He lives in Min­neapo­lis with his wife and their two children.